CN201904117U - Signal cable with soft structure lightning protection sheath layer - Google Patents
Signal cable with soft structure lightning protection sheath layer Download PDFInfo
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- CN201904117U CN201904117U CN2010205511481U CN201020551148U CN201904117U CN 201904117 U CN201904117 U CN 201904117U CN 2010205511481 U CN2010205511481 U CN 2010205511481U CN 201020551148 U CN201020551148 U CN 201020551148U CN 201904117 U CN201904117 U CN 201904117U
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Abstract
The utility model relates to the technical field of electric wires and cables, and discloses a signal cable with a soft structure lightning protection sheath layer. The signal cable comprises a cable core in the inner layer and an outer sheath layer in the outer layer, wherein a soft structure lightning protection layer is arranged between the cable core and the outer sheath layer, and the soft structure lightning protection layer comprises a metal wire and cellosilk mixing braid layer and a plastic insulation inner sheath layer covered outside the metal wire and cellosilk mixing braid layer. The signal cable has the advantages of simple manufacturing process, low cost and fine flexibility, and is especially suitable for connecting systems with high lightning protection design requirement for the electric equipment such as a railway engine, an airplane, a steamship, a subway train and the like.
Description
Technical field
The utility model relates to technical field of electric wires and cables, is specifically related to a kind of signal cable of the soft junction structure lightning protection sheath that has.
Background technology
Thunder and lightning by cloud layer charged in the atmosphere each other or over the ground discharge form, it is to be made of 1 or several discharge pulses.Because cloud-to-cloud discharge or cloud layer be the induction effect of discharging current over the ground, or owing to the direct discharge of cloud layer to circuit, overvoltage that forms on circuit and overcurrent harm are the objects of paying close attention to of design of electrical system.In electrical system electric power transmission network, distribution network, all take various lightning protection measuress, even when each electric equipment manufactures and designs, also considered the requirement of lightning protection.In some lack the mobile device of good protection; especially hot-short, boats and ships, aircraft etc.; system equipment is directly exposed under the environment of thunder and lightning inevitably; except distribution system need be carried out good lightning Protection Design, the part key position used to such an extent that cable itself also must possess the ability that prevents damage to crops caused by thunder accordingly under this environment.
The lightning protection properties of cable is generally solved by two kinds of approach: (1) improves the anti-lightning strike ability of outer jacket.Present most of lightning retardant cable all adopts the material with higher volumes cable rate as outer jacket, and the amplitude that further improves is limited in this.(2) reduce the resistivity of metal lightning protection sheath, just increase the sectional area of metal lightning protection layer.Most lightning protected cable plays anti-lightning strike effect by the steel structure that adopts larger sectional area, as adopting metal tube (aluminum pipe, lead pipe and bellows), certain combination of metal tape (copper strips coating), the braiding of metal copper wire or above-mentioned three kinds of structures.Such structure when playing anti-lightning strike effect owing to adopted the structural design of rigidity, make cable harder, weight is heavier, has increased considerably the difficulty of construction, installation, maintenance, replacing in some occasions (in railway locomotive, aircraft, steamer, the subway)
The utility model aims to provide a kind of signal cable with soft junction structure lightning protection sheath, and this cable possesses the anti-lightning strike performance of good cable and good flexibility under the prerequisite that guarantees the cable design function.
The utility model content
The purpose of this utility model is to overcome defective of the prior art, and a kind of signal cable with soft junction structure lightning protection sheath is provided.
The following technical proposals that adopted the utility model solves above-mentioned technical problem:
A kind of signal cable with soft junction structure lightning protection sheath, the cable core and the outer field external sheath layer that comprise internal layer, wherein, be provided with soft junction structure lightning protection layer between described cable core and the external sheath layer, described soft junction structure lightning protection layer comprise wire and filament mixed weaving layer and be wrapped in described wire and filament mixed weaving layer outside the plastic insulation sheath.
Described wire and filament mixed weaving layer comprise wire and filament, and wire and filament quadrature are woven into netted.Described wire comprises tinned copper wire, bare copper wire, silver-gilt copper wire.Described filament comprises glass fiber, natural silk, cotton yarn, the dimity, dacron thread, aramid fiber silk isoelectric line cable auxiliary fiber material commonly used.
Owing to adopt wire and filament mixed weaving, both guaranteed the current by pass of cable, because unidirectional braiding wiry makes cable have suitable flexibility;
Plastic insulation sheath in the described soft junction structure lightning protection layer forms for adopting low density polyethylene (LDPE) to extrude, owing to utilize the anti-punch-through effect of thin insulating, this layer thickness is generally between the 0.05-0.10mm.
Described cable core is provided with many groups, and every group of cable core comprises complex root stranded insulated wire cores, sub-shield and inner restrictive coating mutually from the inside to the outside successively.
Described insulated wire cores comprises conductor and is wrapped in insulating barrier outside the conductor.
Further, be provided with multilayer soft junction structure lightning protection layer between described cable core and the external sheath layer.The structure of soft junction structure lightning protection layer repeats on construction of cable unit, when not losing too much cable flexibility, can guarantee that cable possesses more thunder-strike current passage.
Signal cable of the present utility model adopts soft junction structure lightning protection sheath, and the screen sectional area of individual layer soft junction structure lightning protection sheath can reach 8mm
2More than, double-deck sectional area can reach 20mm
2More than, its drainage ability increases greatly, and makes cable have suitable flexibility (bending radius can reach 4D).Because soft junction structure lightning protection sheath employing thin insulating is a sheath, and the ability of its anti-lightning induction surge voltage increases greatly, disruptive field intensity can reach more than the 80kV/mm in short-term simultaneously.This soft junction structure lightning protection sheath, under the constant prerequisite of the anti-lightning strike performance of cable, than metal bellows, that the all-metal braid not only has manufacture craft is simple, with low cost, its flexibility substantially exceeds the cable of above-mentioned two kinds of structures.
Signal cable of the present utility model is particularly useful for electric equipments such as railway locomotive, aircraft, steamer, subway the connected system of high lightning Protection Design demand, and need regularly safeguard the occasion of replacing.
Description of drawings
Fig. 1: the signal cable schematic cross-section that the utlity model has soft junction structure lightning protection sheath
Fig. 2: individual layer soft junction structure lightning protection layer schematic diagram
Fig. 3: individual layer lightning protection layer schematic diagram
Embodiment
The signal cable that has soft junction structure lightning protection sheath as shown in Figure 1 comprises the cable core 1 and the outer field external sheath layer 2 of internal layer wherein, being provided with soft junction structure lightning protection layer between cable core and the external sheath layer.
Described soft junction structure lightning protection layer comprises the first soft junction structure lightning protection layer 3 and the second soft junction structure lightning protection layer 4, individual layer soft junction structure lightning protection layer comprise wire and filament mixed weaving layer 31 (41) as shown in Figure 2 and be wrapped in described wire and filament mixed weaving layer outside plastic insulation sheath 32 (42).Single-layer metal silk and filament mixed weaving layer comprise wire 7 and filament 8 as shown in Figure 3, and both quadratures are woven into netted.
The first soft junction structure lightning protection layer 3 comprises first wire and the filament mixed weaving layer 31 and the first plastic insulation sheath 32.First wire and filament mixed weaving layer 31 adopt tinned copper wire and the braiding of glass fiber hybrid orthogonal, and promptly glass fiber is identical with zinc-plated soft copper silk number of spindles, and two kinds of silk threads are arranged on the rightabout braiding ingot when braiding, and direction weaves on the contrary.The tinned copper wire weaving is monofilament 0.25mm, 10 on every ingot, and totally 12 ingots, percentage of braiding coverage 85%, copper wire are dextrad.The first plastic insulation sheath 32 adopts polyethylene insulation, nominal thickness 0.10mm.
The second soft junction structure lightning protection layer 4 comprises second wire and the filament mixed weaving layer 41 and the second plastic insulation sheath 42.Second wire and filament mixed weaving layer 41 adopt tinned copper wire and the braiding of glass fiber hybrid orthogonal, and glass fiber is identical with zinc-plated soft copper silk number of spindles, and direction weaves on the contrary.The tinned copper wire weaving is monofilament 0.25mm, 12 on every ingot, and totally 16 ingot percentage of braiding coverages 75%, copper wire is a dextrad.The second plastic insulation sheath 42 adopts polyethylene insulation, nominal thickness 0.10mm.
The long-pending 16mm that reaches of the soft junction structure lightning protection layer cross section of cable shown in this example
2, the bending radius of cable can reach 4D.
Described cable core 1 has many groups, and every group of cable core comprises complex root stranded insulated wire cores 11, sub-shield 12 and inner restrictive coating 13 mutually from the inside to the outside successively, and insulated wire cores 11 comprises conductor 111 and is wrapped in insulating barrier 112 outside the conductor.
Claims (5)
1. signal cable with soft junction structure lightning protection sheath, the cable core and the outer field external sheath layer that comprise internal layer, it is characterized in that, be provided with soft junction structure lightning protection layer between described cable core and the external sheath layer, described soft junction structure lightning protection layer comprise wire and filament mixed weaving layer and be wrapped in described wire and filament mixed weaving layer outside the plastic insulation sheath.
2. have the signal cable of soft junction structure lightning protection sheath according to claim 1, it is characterized in that, described wire and filament mixed weaving layer comprise wire and filament, and wire and filament quadrature are woven into netted.
3. have the signal cable of soft junction structure lightning protection sheath according to claim 1, it is characterized in that, the thickness of described plastic insulation sheath is 0.05-0.10mm.
4. the signal cable that has soft junction structure lightning protection sheath according to claim 1, it is characterized in that, described cable core is provided with many groups, every group of cable core comprises complex root stranded insulated wire cores, sub-shield and inner restrictive coating mutually from the inside to the outside successively, and described insulated wire cores comprises conductor and is wrapped in insulating barrier outside the conductor.
5. have the signal cable of soft junction structure lightning protection sheath as claim 1-4 as described in arbitrary, it is characterized in that, be provided with the described soft junction structure of multilayer lightning protection layer between described cable core and the external sheath layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205511481U CN201904117U (en) | 2010-09-30 | 2010-09-30 | Signal cable with soft structure lightning protection sheath layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205511481U CN201904117U (en) | 2010-09-30 | 2010-09-30 | Signal cable with soft structure lightning protection sheath layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201904117U true CN201904117U (en) | 2011-07-20 |
Family
ID=44274710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205511481U Expired - Fee Related CN201904117U (en) | 2010-09-30 | 2010-09-30 | Signal cable with soft structure lightning protection sheath layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201904117U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915200A (en) * | 2013-09-24 | 2014-07-09 | 安徽华成电缆有限公司 | Ethylene propylene rubber insulation armored sheath power cable |
| CN104658657A (en) * | 2013-07-01 | 2015-05-27 | 王笑梅 | Lightning protected cable for communication base station |
| CN106251988A (en) * | 2016-08-30 | 2016-12-21 | 杨昆 | A kind of preparation method of meteorological balloon cable |
-
2010
- 2010-09-30 CN CN2010205511481U patent/CN201904117U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104658657A (en) * | 2013-07-01 | 2015-05-27 | 王笑梅 | Lightning protected cable for communication base station |
| CN104658657B (en) * | 2013-07-01 | 2017-01-25 | 国网山东省电力公司淄博供电公司 | Lightning protected cable for communication base station |
| CN103915200A (en) * | 2013-09-24 | 2014-07-09 | 安徽华成电缆有限公司 | Ethylene propylene rubber insulation armored sheath power cable |
| CN106251988A (en) * | 2016-08-30 | 2016-12-21 | 杨昆 | A kind of preparation method of meteorological balloon cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20180930 |